Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Net sales	$ 96,797	$ 107,614
MALAYSIA
Net sales	18,162	16,899
CHINA
Net sales	14,128	11,744
PHILIPPINES
Net sales	13,186	11,842
GERMANY
Net sales	11,245	8,185
UNITED STATES
Net sales	8,756	14,642
SINGAPORE
Net sales	4,877	12,064
Rest of the World [Member]
Net sales	26,443	32,238
Systems [Member]
Net sales	35,642	37,311
Non-systems [Member]
Net sales	$ 61,155	$ 70,303